[MLton] ARM and setRoundingMode

Adam Goode adam at spicenitz.org
Sun Apr 12 22:50:24 PDT 2009


I am bootstrapping MLton for Fedora ARM. Everything seems to be
working well, but the target hardware is software floating point,
which on ARM doesn't implement non-default IEEE rounding modes.

According to
if the hardware doesn't support a rounding mode, setRoundingMode
could raise an exception for unsupported modes. This is detectable
when fesetround returns a non-zero value.

Should MLton do this? What exception should be used? It would
be nice to know when setRoundingMode fails.



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